Kragma Butcher

A 2/3 for three does nothing threatening on the attack, and that is exactly the point: this minotaur pays out a turn late, arriving as a 4/3 only after it untaps on your next turn. The trigger keys off becoming untapped, not attacking, which is the subtlety worth sitting with. The default loop is the untap step: swing, tap, untap, gain +2/+0 until end of turn, swing again as a 4/3, repeat. The wrinkle is anything that untaps it outside that rhythm. An effect that taps it for a cost and then frees it, or a spell that untaps it mid-combat, re-arms the buff, and multiple untaps in one turn each fire the trigger and stack the pump. That turns the body into a switch you can flip more than once if you build to flip it. Note what actively backfires: vigilance keeps the creature from tapping at all, so it never becomes untapped and never gets the bonus. The keyword that helps most attackers shuts this one off. The cost is paid in tempo, since the boost always trails the attack by a turn rather than leading it, which stops a recurring 4/3 from ever quite playing like one. Clean teaching design for how this kind of untap-triggered creature asks you to treat your own untap step as a resource to spend rather than a phase to pass through.